Name: Stainless steel elbow
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Stainless steel elbow

Superior Corrosion Resistance: Handles various corrosive media
Smooth Interior Design: Reduces flow resistance and prevents scaling
High-Strength Construction: Withstands high pressure and temperature variations
Multiple Angle Options: Meets diverse directional change requirements
Easy Installation: Precise dimensions ensure installation efficiency
Long Service Life: Low maintenance costs, excellent cost-effectiveness

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◉ PRODUCT SPECIFICATION

Elbow Types & Angles

Type	Angle Range	Bend Radius	Primary Applications
45° Elbow	45°	1.5D, 2D, 3D	Gentle direction changes, minimal pressure drop
90° Elbow	90°	1D, 1.5D, 2D, 3D, 5D	Standard right-angle turns
180° Elbow	180°	1.5D, 2D, 3D	U-shaped return systems
Long Radius Elbow	45°/90°	R=1.5D	Low-pressure drop applications
Short Radius Elbow	90°	R=1D	Space-constrained installations
Reducing Elbow	45°/90°	1.5D, 2D	Size transition connections

Material Grades

304/304L: Cost-effective general-purpose stainless steel
316/316L: Molybdenum-enhanced for superior corrosion resistance
321: Titanium-stabilized for high-temperature service
310S: Excellent high-temperature and oxidation resistance
904L: Super stainless steel for highly corrosive environments
Duplex 2205: High strength with excellent corrosion resistance

Pressure Ratings & Standards

Standard System	Pressure Classes	Size Range	Applicable Specifications
ASME/ANSI	Sch5S-Sch160	1/2"-48"	B16.9, B16.28
DIN	PN6-PN100	DN15-DN1000	DIN2605, DIN2635
JIS	5K-30K	15A-1000A	JIS B2311
GB	PN0.25-PN25	DN6-DN2000	GB/T12459

Technical Parameters

Dimensions & Tolerances

Outside Diameter Tolerance: ±1.5% (Standard), ±1.0% (Precision)
Wall Thickness Tolerance: ±12.5% (Standard), ±10% (Precision)
Angle Tolerance: ±0.5° (Precision machining), ±1.0° (Standard machining)
Roundness Tolerance: ≤1%D (D = Nominal Diameter)

Connection Methods

Butt Weld: High strength, excellent sealing
Socket Weld: Easy installation, suitable for small diameters
Threaded: Low-pressure systems, easy disassembly
Flanged: Large diameters, convenient maintenance

Manufacturing Processes

Production Methods

Hot Push Forming: Cost-effective for large quantities
Cold Push Forming: Small diameters, superior surface quality
Hot Press Forming: Large diameters, uniform wall thickness
Welded Construction: Extra-large sizes, custom production

Quality Control

Raw Material Inspection: Spectrometer verification
Dimensional Inspection: CMM precision measurement
Pressure Testing: 1.5 times working pressure test
Surface Inspection: Internal borescope examination
NDT Testing: Radiographic, ultrasonic inspection

Performance Parameters

Mechanical Properties

Material	Tensile Strength (MPa)	Yield Strength (MPa)	Elongation (%)	Hardness (HB)
304	≥520	≥205	≥40	≤187
316	≥520	≥205	≥40	≤187
321	≥520	≥205	≥40	≤187
Duplex 2205	≥620	≥450	≥25	≤293

Temperature-Pressure Relationship

Operating Temperature: -196°C to 800°C (varies by material)
Pressure Rating: Vacuum to 42MPa
Temperature-Pressure Derating: Complete curves provided

Surface Treatments

Surface Finishes

Mechanical Polishing: Ra≤0.8μm (Food grade)
Electropolishing: Ra≤0.4μm (High cleanliness requirements)
Pickling & Passivation: Enhanced corrosion resistance
Sandblasting: Uniform matte surface

Special Treatments

Internal Polishing: Meets sanitary requirements
External Surface Treatment: Customized per customer requirements
Marking & Identification: Permanent material identification

◉ Surfcae selection

SURFACE	CHARACTERISTIC	SUMMARY OF MANUFACTURING METHOD	APPLICATION
NO.1	Silvery white	Hot rolled to specified thickness	Do not need to have a glossy surface use
NO.1	lackluster	Hot rolled to specified thickness	Do not need to have a glossy surface use
NO.2D	Silvery white	After cold rolling, heat treatment and pickling are carried out	General material, deep material
NO.2B	Gloss is stronger than No.2D	After No.2D treatment, the final light cold rolling is carried out through the polishing roller	The general material
BA	As bright as a sixpence	No standard, but usually a bright annealed surface with high reflectivity.	Building materials, kitchen utensils
NO.3	Rough lapping	Grind with 100~200# (unit) strop tape	Building materials, kitchen utensils
NO.4	Intermediate grinding	Polished surface obtained by grinding with 150~180# strop abrasive tape	Building materials, kitchen utensils
NO.240	Fine lapping	Grinding with 240# strop abrasive tape	kitchenware
NO.320	Very fine grinding	Grinding was carried out with 320# strop abrasive tape	kitchenware
NO.400	The luster is close to BA	Use 400# polishing wheel to grind	General timber, building timber, kitchen appliances
HL	Hairline grinding	Suitable particle material for hair stripe grinding (150~240#) with many grains	Building, construction material
NO.7	It's close to mirror grinding	Use a 600# rotary polishing wheel to grind	For art or decoration
NO.8	Mirror ultrafinish	The mirror is ground with a polishing wheel	Reflector, for decoration